Detect musical errors and strengthen music-reading skills. Taking on the role of a mentor, students listen to a peer perform musical phrases shown on screen, and must offer feedback to help improve the performance.

The computer makes up a mystery operation and you have to figure out what it is. Keep entering pairs of numbers for the computer to calculate and try to find the pattern in the answers the computer gives until you think you know what's going on.

Students have written one-paragraph self-descriptions to send to other citizens of the new state they are creating. Read one of the paragraphs and work backwards through a series of prompts to determine the paragraph's audience, purpose, genre and theme.

Read three newspaper articles, one at a time, about events of historical significance. Identify the region and era particular to each newspaper article, and answer additional questions about the topic covered.

Many Renaissance artists and architects used the concept of the golden mean which was thought to be visually pleasing. An Italian mathematician developed a series of numbers related to the golden mean; see if you can detect the pattern.

Click through each representation to see how the display of relative frequency relates to the display of cumulative frequency and their corresponding histograms. Examine how each method is useful for summarizing the variation in numeric data.